Only advice I have with regard to magnesium and D is on the Vitamin D, buy gels, not tablets as the tablets, from what I understand, are not as readily absorbed by the body.

look for gelcaps made from olive oil, not soybean oil.

As I ate the oysters with their strong taste of the sea and their faint metallic taste that the cold white wine washed away, leaving only the sea taste and the succulent texture, and as I drank their cold liquid from each shell and washed it down with the crisp taste of the wine, I lost the empty feeling and began to be happy and to make plans.

I've been looking for Butter Oil everywhere. No one carries it. Do you know how much K2 is actually in it?

It doesn't seem to say on the containers, and I strongly suspect it varies wildly by season anyway. I'm guessing at this time of year, not a huge amount. Spring and autumn, on the other hand, probably quite a bit.

It seems to be quite difficult to find a decent supplier of menatetrenone (K2-mk4) outside of the US. I ended up ordering some from vrp.com, and was surprised to receive them (in NZ) within a week. I'm not sure they're great price-wise, and the capsules should definitely be taken with some form of fat to aid in absorption, but at least they're set up for overseas shipping.